<script setup>
import { getCategoryFilterAPI,getSubCategoryAPI } from '@/apis/category';
import { ref,onMounted } from 'vue';
import { useRoute } from 'vue-router';
import GoodsItem from '../Home/ components/GoodsItem.vue';
let categoryData=ref({})
let route=useRoute()
let getCategoryData = async ()=>{
  let res = await getCategoryFilterAPI(route.params.id)
  categoryData.value=res.result
}
onMounted(()=>{
  getCategoryData()
})

//获取基础列表数据
let goodList = ref([])
let reqData=ref({
  categoryId:route.params.id,
  page:1,
  pageSize:20,
  sortField:'publishTime'
})
let getGoodList=async ()=>{
  let res = await getSubCategoryAPI(reqData.value)
  goodList.value=res.result.items

}
onMounted(()=>{
  getGoodList()
})
//tab切换回调

let tabChange=()=>{
  console.log('tab switchwd',reqData.value.sortField)
  //使用最新字段发送网络请求
  reqData.value.page=1
  //万一之前已经加载很多页了
  getGoodList()
}

//加载更多
let disabled = ref(false)
let load = async ()=>{
  console.log('加载更多数据')
  reqData.value.page++
  let res = await getSubCategoryAPI(reqData.value)
  goodList.value=[...goodList.value,...res.result.items]
  //加载完毕停止监听
  if(res.result.items.length===0){
    disabled.value=true
  }

}

</script>

<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${categoryData.parentId}` }">{{ categoryData.parentName}}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ categoryData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <!-- 绑定为tab-change事件，这个field改变了触发 -->
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" v-infinite-scroll="load" :infinite-scroll-disabled="disabled">
        <!-- 商品列表-->
        <GoodsItem v-for="goods in goodList" :good="goods"  :key="goods.id"></GoodsItem>

      </div>
    </div>
  </div>

</template>



<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }


}
</style>
